Operator’s Guide Appendix F
002-5572 RJS, Minneapolis, MN
39
NOTES:
1. X = X dimension
2. Tolerance is expressed as a fraction of the X dimension
R = Ratio in the calculations
3. UPC/EAN tolerances:
80 - 89% = .14X
90 - 115% = .30X
116 - 150% = .34X
151 - 200% = .38X
4. See Appendix I for Quiet Zone Analysis descriptions.
5. UPC-A symbols with a number system character value of 2 and EAN-13 symbols with a prefix of 20
contain a random weight check digit in addition to the normal Mod 10 check digit. This extra digit is
automatically analyzed and displayed in the Mod Check Data Analysis screen as shown below:
Modck: 1 5 PASS
Expect: 1 5
The 1 is the random weight check digit and the 5 is the Mod 10 check digit. The symbology specifications allow the
check digit to have a value of zero in cases where it is not used
In cases where the random weight check digit is zero, when another value is expected, a Bad Mod Check
Warning will not be issued. The LCD display and corresponding printout will note the discrepancy with a
“CHK” message in place of “FAIL” as shown below:
Modck: 0 5 CHK
Expect: 1 5
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